Updating Gradle, AGP, Kotlin versions

app/build.gradle

@@ -5,7 +5,8 @@ apply plugin: 'kotlin-android'
 apply plugin: 'kotlin-kapt'
 
 android {
-    compileSdkVersion 34
+    compileSdk 34
+    namespace "com.techyourchance.android"
     defaultConfig {
         applicationId "com.techyourchance.android"
         minSdkVersion 26
@@ -38,7 +39,7 @@ android {
 
         release {
             minifyEnabled true
-            proguardFiles getDefaultProguardFile('proguard-android.txt'), 'proguard-rules.pro'
+            proguardFiles getDefaultProguardFile('proguard-android.txt'), 'proguard-rules.pro', 'gson.pro', 'retrofit2.pro'
             signingConfig signingConfigs.release
         }
 
@@ -64,9 +65,17 @@ android {
 
     }
 
+    buildFeatures {
+        buildConfig = true
+    }
+
     compileOptions {
-        sourceCompatibility = 1.8
-        targetCompatibility = 1.8
+        sourceCompatibility = JavaVersion.VERSION_17
+        targetCompatibility = JavaVersion.VERSION_17
+    }
+
+    kotlinOptions {
+        jvmTarget = "17"
     }
 
     externalNativeBuild {
@@ -108,6 +117,7 @@ dependencies {
     // Networking
     implementation 'com.squareup.retrofit2:retrofit:2.9.0'
     implementation 'com.squareup.retrofit2:converter-gson:2.6.1'
+    implementation 'com.squareup.okhttp3:okhttp-bom:4.12.0'
     implementation 'com.squareup.okhttp3:logging-interceptor:4.9.3'
 
     // Event bus

app/gson.pro

@@ -0,0 +1,72 @@
+### Gson ProGuard and R8 rules which are relevant for all users
+### This file is automatically recognized by ProGuard and R8, see https://developer.android.com/build/shrink-code#configuration-files
+###
+### IMPORTANT:
+### - These rules are additive; don't include anything here which is not specific to Gson (such as completely
+###   disabling obfuscation for all classes); the user would be unable to disable that then
+### - These rules are not complete; users will most likely have to add additional rules for their specific
+###   classes, for example to disable obfuscation for certain fields or to keep no-args constructors
+###
+
+# Keep generic signatures; needed for correct type resolution
+-keepattributes Signature
+
+# Keep Gson annotations
+# Note: Cannot perform finer selection here to only cover Gson annotations, see also https://stackoverflow.com/q/47515093
+-keepattributes RuntimeVisibleAnnotations,AnnotationDefault
+
+### The following rules are needed for R8 in "full mode" which only adheres to `-keepattribtues` if
+### the corresponding class or field is matches by a `-keep` rule as well, see
+### https://r8.googlesource.com/r8/+/refs/heads/main/compatibility-faq.md#r8-full-mode
+
+# Keep class TypeToken (respectively its generic signature) if present
+-if class com.google.gson.reflect.TypeToken
+-keep,allowobfuscation class com.google.gson.reflect.TypeToken
+
+# Keep any (anonymous) classes extending TypeToken
+-keep,allowobfuscation class * extends com.google.gson.reflect.TypeToken
+
+# Keep classes with @JsonAdapter annotation
+-keep,allowobfuscation,allowoptimization @com.google.gson.annotations.JsonAdapter class *
+
+# Keep fields with any other Gson annotation
+# Also allow obfuscation, assuming that users will additionally use @SerializedName or
+# other means to preserve the field names
+-keepclassmembers,allowobfuscation class * {
+  @com.google.gson.annotations.Expose <fields>;
+  @com.google.gson.annotations.JsonAdapter <fields>;
+  @com.google.gson.annotations.Since <fields>;
+  @com.google.gson.annotations.Until <fields>;
+}
+
+# Keep no-args constructor of classes which can be used with @JsonAdapter
+# By default their no-args constructor is invoked to create an adapter instance
+-keepclassmembers class * extends com.google.gson.TypeAdapter {
+  <init>();
+}
+-keepclassmembers class * implements com.google.gson.TypeAdapterFactory {
+  <init>();
+}
+-keepclassmembers class * implements com.google.gson.JsonSerializer {
+  <init>();
+}
+-keepclassmembers class * implements com.google.gson.JsonDeserializer {
+  <init>();
+}
+
+# Keep fields annotated with @SerializedName for classes which are referenced.
+# If classes with fields annotated with @SerializedName have a no-args
+# constructor keep that as well. Based on
+# https://issuetracker.google.com/issues/150189783#comment11.
+# See also https://github.com/google/gson/pull/2420#discussion_r1241813541
+# for a more detailed explanation.
+-if class *
+-keepclasseswithmembers,allowobfuscation class <1> {
+  @com.google.gson.annotations.SerializedName <fields>;
+}
+-if class * {
+  @com.google.gson.annotations.SerializedName <fields>;
+}
+-keepclassmembers,allowobfuscation,allowoptimization class <1> {
+  <init>();
+}

app/retrofit2.pro

@@ -0,0 +1,45 @@
+# Retrofit does reflection on generic parameters. InnerClasses is required to use Signature and
+# EnclosingMethod is required to use InnerClasses.
+-keepattributes Signature, InnerClasses, EnclosingMethod
+
+# Retrofit does reflection on method and parameter annotations.
+-keepattributes RuntimeVisibleAnnotations, RuntimeVisibleParameterAnnotations
+
+# Keep annotation default values (e.g., retrofit2.http.Field.encoded).
+-keepattributes AnnotationDefault
+
+# Retain service method parameters when optimizing.
+-keepclassmembers,allowshrinking,allowobfuscation interface * {
+    @retrofit2.http.* <methods>;
+}
+
+# Ignore JSR 305 annotations for embedding nullability information.
+-dontwarn javax.annotation.**
+
+# Guarded by a NoClassDefFoundError try/catch and only used when on the classpath.
+-dontwarn kotlin.Unit
+
+# Top-level functions that can only be used by Kotlin.
+-dontwarn retrofit2.KotlinExtensions
+-dontwarn retrofit2.KotlinExtensions$*
+
+# With R8 full mode, it sees no subtypes of Retrofit interfaces since they are created with a Proxy
+# and replaces all potential values with null. Explicitly keeping the interfaces prevents this.
+-if interface * { @retrofit2.http.* <methods>; }
+-keep,allowobfuscation interface <1>
+
+# Keep inherited services.
+-if interface * { @retrofit2.http.* <methods>; }
+-keep,allowobfuscation interface * extends <1>
+
+# With R8 full mode generic signatures are stripped for classes that are not
+# kept. Suspend functions are wrapped in continuations where the type argument
+# is used.
+-keep,allowobfuscation,allowshrinking class kotlin.coroutines.Continuation
+
+# R8 full mode strips generic signatures from return types if not kept.
+-if interface * { @retrofit2.http.* public *** *(...); }
+-keep,allowoptimization,allowshrinking,allowobfuscation class <3>
+
+# With R8 full mode generic signatures are stripped for classes that are not kept.
+-keep,allowobfuscation,allowshrinking class retrofit2.Response

app/src/main/AndroidManifest.xml

@@ -2,7 +2,6 @@
 <manifest
     xmlns:android="https://schemas.android.com/apk/res/android"
     xmlns:tools="https://schemas.android.com/tools"
-    package="com.techyourchance.android"
     >
 
     <uses-permission android:name="android.permission.INTERNET" />

app/src/main/java/com/techyourchance/android/common/Constants.kt

@@ -10,7 +10,7 @@ object Constants {
 
     const val LATEST_APK_INFO_FILE_NAME_RELEASE = "latest-release.json"
     const val LATEST_APK_INFO_FILE_NAME_DEBUG = "latest-debug.json"
-    const val APK_VERSION_CHECK_MIN_INTERVAL_MS = 1000L * 60 * 60 * 24 // 24 hours
+    const val APK_VERSION_CHECK_MIN_INTERVAL_MS = 1000L * 60 * 60 * 24  // 24 hours
 
     const val DEFAULT_DIALOG_WIDTH_RATIO = 0.8f
     const val DEFAULT_DIALOG_HEIGHT_RATIO = 0.3f

build.gradle

@@ -1,7 +1,7 @@
 
 buildscript {
     ext {
-        kotlin_version = '1.7.21'
+        kotlin_version = '1.8.22'
     }
 
     repositories {
@@ -10,7 +10,7 @@ buildscript {
     }
 
     dependencies {
-        classpath 'com.android.tools.build:gradle:7.4.2'
+        classpath 'com.android.tools.build:gradle:8.1.2'
         classpath "org.jetbrains.kotlin:kotlin-gradle-plugin:$kotlin_version"
     }
 }

gradle/wrapper/gradle-wrapper.properties

@@ -3,4 +3,4 @@ distributionBase=GRADLE_USER_HOME
 distributionPath=wrapper/dists
 zipStoreBase=GRADLE_USER_HOME
 zipStorePath=wrapper/dists
-distributionUrl=https\:https://services.gradle.org/distributions/gradle-7.6.1-all.zip
+distributionUrl=https\:https://services.gradle.org/distributions/gradle-8.1.1-all.zip